According to Ukrinform, this was reported on Facebook by the Naval Forces of the Armed Forces of Ukraine.
Read also: Russia deploys one submarine to Black SeaAt the same time, there are no enemy ships in the Azov and Mediterranean Seas.
As reported by Ukrinform, rescue operations are underway in the temporarily occupied Crimea in Sevastopol Bay for the Russian missile carrier Cyclone, which was hit by the Ukrainian Defence Forces on 19 May.